Keep the cabin airflow going where you set it with the Four Seasons Mode Door Actuator 73664, a direct-fit replacement for the 2007-2009 Lexus LS460, the 2008-2010 Lexus LS600, and the 2008-2010 Lexus LS600H. This small electric actuator drives the HVAC mode door that directs airflow between the dash vents, floor, and defrost outlets — cataloged for the auxiliary position on the listed applications. When the mode door actuator fails, airflow may stick on one outlet or stop responding to the temperature/mode controls, and you may hear clicking or knocking behind the dash.
Complete drive assembly: includes the lever arm, gear, cam gear hardware, and linkage as applicable.
Quality internals: internal motor, drive gears, electronics, and connections.
Tested unit: checked for function, durability, and longevity.
Backed by experience: built on over 50 years of Four Seasons mobile A/C know-how.
Built to OE-level fit and function so it drops in like the original. If a failed actuator is the cause of your airflow-direction trouble, this replaces it; diagnose the cause before ordering, as door binding or a control fault can produce similar symptoms.
This part cross-references / interchanges with the following part numbers:
ACT1983IM, 73664, BDAA1404, 8710650450, DA1613
Frequently Asked Questions
What does this HVAC mode door actuator do?
It is a small electric motor that positions the mode door in the HVAC housing, directing airflow between the dash vents, floor, and defrost outlets based on your control settings.
Which vehicles does the 73664 fit?
It is a direct-fit replacement for the 2007-2009 Lexus LS460, 2008-2010 Lexus LS600, and 2008-2010 Lexus LS600H. See the Buyer's Guide tab for full engine-level details.
What position is this actuator for?
It is cataloged for the auxiliary position on the listed applications. Confirm the fitment for your vehicle before ordering.
What is included with the actuator?
It includes the lever arm, gear, cam gear hardware, and linkage as applicable, along with the internal motor, drive gears, electronics, and connections.
What are signs this actuator may need replacing?
Airflow that stays stuck on one outlet, does not respond to mode changes, or clicking/knocking behind the dash. Diagnose the cause first, since door binding or a control fault can mimic these signs.
Keep your climate control pointing air where you want it with the Four Seasons HVAC Defrost Mode Door Actuator / HVAC Mode Door Actuator (MPN 73093). This is the MAIN mode-door actuator — the small...
HVAC Air Door ActuatorOur products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four...
HVAC Air Door ActuatorOur products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four...
HVAC Air Door ActuatorOur products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four...
HVAC Air Door ActuatorOur products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
